<template>
  <div class="login-container" :style="{backgroundImage: 'url(' + basicSettingDataForm.systemBackground + ')', backgroundSize:'cover'}">
    <el-form
      ref="loginForm"
      :model="loginForm"
      :rules="loginRules"
      autocomplete="on"
      class="login-form"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">
          {{ basicSettingDataForm.systemTitle ? basicSettingDataForm.systemTitle : $t('login.title') }}
        </h3>
        <!--        <lang-select class='set-language' />-->
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          :placeholder="$t('login.username')"
          autocomplete="on"
          name="username"
          tabindex="1"
          type="text"
        />
      </el-form-item>

      <el-tooltip
        v-model="capsTooltip"
        content="Caps lock is On"
        manual
        placement="right"
      >
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.password"
            :placeholder="$t('login.password')"
            :type="passwordType"
            autocomplete="on"
            name="password"
            tabindex="2"
            @blur="capsTooltip = false"
            @keyup.native="checkCapslock"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon
              :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
            />
          </span>
        </el-form-item>
      </el-tooltip>

      <el-form-item prop="code">
        <span class="svg-container">
          <svg-icon icon-class="icon" />
        </span>
        <el-input
          ref="code"
          v-model="loginForm.code"
          :placeholder="$t('login.code')"
          autocomplete="on"
          name="code"
          tabindex="3"
          @keyup.native="checkCapslock"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-code" @click="checkImageCode">
          <el-image :src="imageCode" style="width: 180px; height: 47px" />
        </span>
      </el-form-item>

      <el-button
        :loading="loading"
        style="width:100%;margin-bottom:30px;"
        type="primary"
        @click.native.prevent="handleLogin"
      >
        {{ $t('login.logIn') }}
      </el-button>

      <div style="position:relative">
        <!--        <div class='tips'>-->
        <!--          <span>{{ $t('login.username') }} : admin</span>-->
        <!--          <span>{{ $t('login.password') }} : {{ $t('login.any') }}</span>-->
        <!--        </div>-->
        <!--        <div class='tips'>-->
        <!--          <span style='margin-right:18px;'>-->
        <!--            {{ $t('login.username') }} : editor-->
        <!--          </span>-->
        <!--          <span>{{ $t('login.password') }} : {{ $t('login.any') }}</span>-->
        <!--        </div>-->

        <!--        <el-button-->
        <!--          class='thirdparty-button'-->
        <!--          type='primary'-->
        <!--          @click='showDialog = true'-->
        <!--        >-->
        <!--          {{ $t('login.thirdparty') }}-->
        <!--        </el-button>-->
      </div>
    </el-form>
    <el-dialog :title="$t('login.thirdparty')" :visible.sync="showDialog">
      {{ $t('login.thirdpartyTips') }}
      <br>
      <br>
      <br>
      <social-sign />
    </el-dialog>
  </div>
</template>

<script>
// import { validUsername } from '@/utils/validate'
import SocialSign from './components/SocialSignin'
import { createUUID, localRead, localSave } from '@/utils'
import { getImageCode } from '@/api/login'
import { getBasicSetting } from '@/api/admin/sysConfig'

export default {
  name: 'Login',
  components: { SocialSign },
  data() {
    const validateUsername = (rule, value, callback) => {
      // if (!validUsername(value)) {
      //   callback(new Error('Please enter the correct user name'))
      // } else {
      //   callback()
      // }
      callback()
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码长度必须超过6位'))
      } else {
        callback()
      }
    }
    const validateCode = (rule, value, callback) => {
      if (value.length !== 4) {
        callback(new Error('请输入正确的验证码'))
      } else {
        callback()
      }
    }
    return {
      imageCode: '',
      basicSettingDataForm: {
        systemTitle: undefined,
        systemLogo: undefined,
        systemBackground: undefined
      },
      loginForm: {
        username: '',
        password: '',
        code: ''
      },
      loginRules: {
        username: [
          { required: true, trigger: 'blur', validator: validateUsername }
        ],
        password: [
          { required: true, trigger: 'blur', validator: validatePassword }
        ],
        code: [{ required: true, trigger: 'blur', validator: validateCode }]
      },
      passwordType: 'password',
      capsTooltip: false,
      loading: false,
      showDialog: false,
      redirect: undefined,
      otherQuery: {}
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        const query = route.query
        if (query) {
          this.redirect = query.redirect
          this.otherQuery = this.getOtherQuery(query)
        }
      },
      immediate: true
    }
  },
  async created() {
    this.getBasicSettingInfo()
    // window.addEventListener('storage', this.afterQRScan)
  },
  mounted() {
    let sid = ''
    if (localRead('sid')) {
      sid = localRead('sid')
    } else {
      sid = createUUID()
      localSave('sid', sid)
    }
    this.getImageCode()
    if (this.loginForm.username === '') {
      this.$refs.username.focus()
    } else if (this.loginForm.password === '') {
      this.$refs.password.focus()
    }
  },
  destroyed() {
    // window.removeEventListener('storage', this.afterQRScan)
  },
  methods: {
    getBasicSettingInfo() {
      getBasicSetting().then(res => {
        this.basicSettingDataForm = res.data
      })
    },
    checkCapslock(e) {
      const { key } = e
      this.capsTooltip = key && key.length === 1 && key >= 'A' && key <= 'Z'
    },
    getImageCode() {
      const sid = localRead('sid')
      getImageCode(sid).then((response) => {
        const { data } = response
        this.imageCode = 'data:image/png;base64,' +
          btoa(
            new Uint8Array(data).reduce(
              (data, byte) => data + String.fromCharCode(byte),
              ''
            )
          )
      })
    },
    checkImageCode() {
      this.getImageCode()
    },
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          const data = {
            ...this.loginForm,
            sid: localRead('sid')
          }
          this.$store
            .dispatch('user/login', data)
            .then(() => {
              this.$router.push({
                path: this.redirect || '/',
                query: this.otherQuery
              })
              this.loading = false
            })
            .catch(() => {
              this.getImageCode()
              this.loading = false
            })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    getOtherQuery(query) {
      return Object.keys(query).reduce((acc, cur) => {
        if (cur !== 'redirect') {
          acc[cur] = query[cur]
        }
        return acc
      }, {})
    }
    // afterQRScan() {
    //   if (e.key === 'x-admin-oauth-code') {
    //     const code = getQueryObject(e.newValue)
    //     const codeMap = {
    //       wechat: 'code',
    //       tencent: 'code'
    //     }
    //     const type = codeMap[this.auth_type]
    //     const codeName = code[type]
    //     if (codeName) {
    //       this.$store.dispatch('LoginByThirdparty', codeName).then(() => {
    //         this.$router.push({ path: this.redirect || '/' })
    //       })
    //     } else {
    //       alert('第三方登录失败')
    //     }
    //   }
    // }
  }
}
</script>

<style lang='scss'>
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0;
      -webkit-appearance: none;
      border-radius: 0;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        background-color:transparent;
        transition: background-color 50000s ease-in-out 0s; //背景色透明  生效时长  过渡效果  启用时延迟的时间
        //box-shadow: 0 0 0 1000px $bg inset !important;
        -webkit-box-shadow: 0 0 0 1000px transparent  inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang='scss' scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    background: rgba(0, 0, 0, 0.6);
    border-radius: 10px;
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 60px 35px 0;
    margin: 100px auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }

    .set-language {
      color: #fff;
      position: absolute;
      top: 3px;
      font-size: 18px;
      right: 0px;
      cursor: pointer;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }

  .show-code {
    position: absolute;
    right: 0;
  }

  .thirdparty-button {
    position: absolute;
    right: 0;
    bottom: 6px;
  }

  @media only screen and (max-width: 470px) {
    .thirdparty-button {
      display: none;
    }
  }
}
</style>
